Green Energy for Today and Tomorrow
今天和明天的绿色能源

Did you know that most of the energy we use comes from the sun? For example, the sun helps plants to grow. Plants that grew millions of years ago turned into coal, oil, and natural gas. We call these fossil fuels.
你知道我们使用的大部分能源来自太阳吗？例如，太阳有助于植物生长。数百万年前生长的植物变成了煤炭、石油和天然气。我们称之为化石燃料。

However, fossil fuels make pollution. This is bad for the Earth. Fossil fuels are also nonrenewable. Some day they will be gone. So, scientists want people to use green energy. Why is green energy important? First, it is clean. It doesn't hurt the Earth. Next, it is renewable. It won't run out. Green energy gives us almost 25% of the electricity we use today.
然而，化石燃料会造成污染。这对地球不利。化石燃料也是不可再生的，总有一天会用完。所以，科学家们希望人们使用绿色能源。为什么绿色能源很重要？首先，它是干净的，不会伤害地球。其次，它是可再生的，不会用完。绿色能源为我们提供了我们今天使用的近25%的电力。

What are the main sources of green energy?
绿色能源的主要来源是什么

1 Water Power
1 水能

Water power uses moving water in rivers and dams. Moving water has energy. Water power makes 16.6% of the electricity we use.
水能利用河流和水坝中的流动水，流动的水具有能量。水能占我们用电量的16.6%。

2 Wind Power
2 风能

Is wind power new? No, it isn't. People used wind power many years ago. Wind power makes 4% of the electricity we use.
风能是新的吗？不，不是的。很多年前人们就使用风能了。风能占我们用电量的4%。

3 Solar Power
3 太阳能

Soar power comes from sunlight. The sun shines on solar panels, and electricity is made. Solar power is no was cheap as some fossil fuels. It makes 15% of the electricity we use
太阳能来自阳光。太阳照射在太阳能板上，从而产生电力。太阳能不像某些化石燃料那样便宜。它占我们用电量的15%。

4 Biomass
4 生物质能

Biomass is energy that we get from plants around us. For example, deadwood or grass is burned in power stations. This makes electricity. Biomass is green energy because we plant new trees or crops after we use it. Biomass makes 2% of the electricity we use.
生物质能是我们从周围的植物中获得的能量。例如，发电站燃烧枯木或草。这产生了电。生物质能是绿色能源，因为我们在使用后种植了新的树木或作物。生物质能占我们用电量的2%。

5 New Green Energy
5 新绿色能源

Ocean rise and fall each day. This moving water can make electricity. We call it tide power. There is also heat under the Earth’s surface. Scientists can use this heat for energy, which is called heat power. We may find other sources of green energy in the future.
海洋每天都在起伏。这种流动的水可以发电。我们称之为潮汐能。地球表面下也有热量。科学家们可以利用这种热量作为能源，这被称为热能。未来我们可能会找到其他绿色能源。

Some day, green energy could make 100% of the electricity we use. That’s good news or the Earth!
有一天，绿色能源可以占我们使用电力的100%。这对地球来说是个好消息！